Xgrid - Parallel and Distributed Computing
According to the description, "This mailing list is for user discussion use and deployment of Xgrid -- Apple's solution for parallel and distributed high performance computing."
'Xgrid' was originally trademarked by Apple in October 2002. There has been some subsequent rumors about it, but little direct information from Apple until now. No official announcement on Xgrid technology has yet been made by Apple.